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All Journal Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Chart Datum TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES (TIRES) Indonesian Journal of Interdisciplinary Research in Science and Technology (MARCOPOLO) Civil and Military Cooperation Journal
Supriyanto, Taufiq
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Physics Social Sciences

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ANALYSIS OF PARABOLIC EQUATION (RAMGEO) PROPAGATION MODEL IN NORTH NATUNA SEA Agustinus, Agustinus; Manik, Henry Munandar; Sukoco, Nawanto Budi; Muharrom, Eka Yudha; Supriyanto, Taufiq
TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES Vol. 3 No. 3 (2024): JULY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/tires.v3i3.1264

Abstract

The waters of the North Natuna Sea are one of Indonesia's conflict-prone maritime areas, frequently traversed by foreign vessels due to its direct border with several neighboring countries, necessitating effective maritime security assurance. To ensure this security, meticulous sea control and surveillance, particularly through the utilization of monitoring tools such as SONAR to detect foreign objects traversing or entering the North Natuna Sea waters, are required. This research aims to analyze the characteristics of underwater acoustic wave propagation patterns, particularly in the formation of silent areas or Shadow Zones, using the Parabolic Equation method (RAMGeo). Parabolic Equation propagation model (RAMGeo) simulations are conducted utilizing the AcTUP v2.2L Toolbox. Temperature and salinity data against depth obtained from Marine Copernicus for one year are utilized in this study, spanning from January 1, 2023, to December 31, 2023, encompassing both the west and east monsoon seasons. Sound propagation velocity calculations are based on the empirical Medwin equation, with a focus on a source depth of 10 meters at frequencies of 100 and 1,000 Hz in the North Natuna Sea. Simulation results indicate that both the west and east monsoon seasons exhibit similar and dense underwater acoustic wave propagation patterns. At a frequency of 100 Hz, the Transmission Loss ranges between 30 to 60 dB, with Shadow Zone areas extending from 0 - 500 meters and from 500 - 1,500 meters. Meanwhile, at a frequency of 1,000 Hz, the Transmission Loss ranges between 30 to 70 dB, with almost no Shadow Zone area present.
Karakteristik Kolom Air di Titik Penyempitan (Choke Point) Selat Makasar: Characteristics of the Water Column at the Choke Point of the Makassar Strait Supriyanto, Taufiq; Agustinus, Agustinus; Rahmatullah, Amri; Pranowo, Widodo Setiyo; Triono, Yoyok
Jurnal Chart Datum Vol. 10 No. 1 (2024): Jurnal Chart Datum
Publisher : Sekolah Tinggi Teknologi Angkatan Laut (STTAL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/chartdatum.v10i1.328

Abstract

Titik Penyempitan (Choke Point) Selat Makassar adalah salah satu wilayah laut Indonesia yang memiliki potensi ancaman besar, termasuk temuan objek asing di dalam kolom air seperti ranjau dan drone bawah air. Penelitian ini bertujuan untuk mengeksplorasi karakteristik kolom air, khususnya lapisan termoklin yang diindikasikan sebagai wilayah persembunyian atau Shadow Zone, dengan kedalaman 0 hingga 300 meter di Titik Penyempitan Selat Makassar. Data suhu dan salinitas terhadap kedalaman yang diperoleh dari Marine Copernicus selama 1 tahun, dari 16 Desember 2019 hingga 16 Desember 2020, digunakan dalam penelitian ini. Selanjutnya, perhitungan kecepatan rambat suara dilakukan berdasarkan persamaan empiris Medwin, dan lapisan termoklin ditentukan dengan ciri gradien suhu perkedalaman sebesar 0,1ºC untuk setiap pertambahan kedalaman satu meter. Visualisasi data menggunakan software ODV 5.6.2 untuk menganalisis karakteristik kolom air terutama suhu, salinitas, dan kecepatan suara di lapisan termoklin. Hasil penelitian menunjukkan bahwa lapisan termoklin, yang berada pada kedalaman 78 hingga 130 meter, memiliki suhu berkisar 20,2 °C sampai 28,2 °C, salinitas 33,75 ‰ sampai 34,25 ‰, dan kecepatan suara 1525 m/s sampai 1540 m/s, dengan ketebalan lapisan termoklin sekitar 52 meter yang diindikasi sebagai daerah persembunyian atau Shadow Zone.
Studi Karakteristik Massa Air Pada Lapisan Termoklin Di Selat Makassar Supriyanto, Taufiq; Apriyanto, I Nengah Putra; Irwanto, Bambang; Adriyanto, Agus; Purwanto, Budi; Agustinus, Agustinus; Pranowo, Widodo S
Jurnal Kelautan Vol 18, No 2: Agustus (2025)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v18i2.29829

Abstract

ABSTRAKSelat Makassar merupakan jalur strategis antara Kalimantan dan Sulawesi yang menghubungkan Samudera Pasifik dan Samudera Hindia. Selain menjadi rute pelayaran internasional penting, wilayah ini juga rawan terhadap ancaman keamanan seperti ranjau laut dan drone bawah air, sehingga membutuhkan pengawasan ketat dan kerja sama lintas sektor. Penelitian ini bertujuan untuk mengeksplorasi karakteristik kolom air, khususnya lapisan termoklin yang berpotensi menjadi wilayah persembunyian (Shadowzone), pada kedalaman 0–300 meter di choke point Selat Makassar. Data suhu dan salinitas terhadap kedalaman diperoleh dari pengukuran argo float selama periode Oktober 2017 hingga Januari 2018. Perhitungan kecepatan rambat suara dilakukan menggunakan persamaan empiris Medwin. Lapisan termoklin diidentifikasi melalui gradien suhu sebesar 0,1°C per meter. Visualisasi dan analisis data dilakukan menggunakan perangkat lunak ODV 5.6.2. Hasil penelitian menunjukkan bahwa lapisan termoklin berada pada kedalaman 86,4–158,1 meter, dengan suhu 16,79–27,98°C, salinitas 33,75–34,67‰, dan kecepatan suara 1514,19–1541,95 m/s. Ketebalan lapisan sekitar 72 meter ini diindikasikan sebagai Shadowzone yang potensial menjadi lokasi persembunyian objek bawah laut.Kata Kunci: Selat Makassar, Lapisan termoklin, Suhu, Salinitas, Kecepatan SuaraABSTRACTThe Makassar Strait is a strategic route between Kalimantan and Sulawesi that connects the Pacific Ocean and the Indian Ocean. In addition to being an important international shipping route, this area is also prone to security threats such as sea mines and underwater drones, requiring strict surveillance and cross-sector cooperation. This study aims to explore the characteristics of the water column, particularly the thermocline layer that has the potential to become a hiding place (Shadowzone), at a depth of 0–300 metres at the Makassar Strait choke point. Temperature and salinity data at different depths were obtained from argofloat measurements during the period from October 2017 to January 2018. Sound propagation velocity calculations were performed using the Medwin empirical equation. The thermocline layer was identified through a temperature gradient of 0.1°C per metre. Data visualisation and analysis were conducted using ODV 5.6.2 software. The results of the study show that the thermocline layer is located at a depth of 86.4–158.1 metres, with a temperature of 16.79–27.98°C, salinity of 33.75–34.67‰, and sound velocity of 1514.19–1541.95 m/s. The thickness of this layer, approximately 72 metres, is indicated as a potential shadow zone for the hiding of underwater objects.Keywords: Makassar Strait, Thermocline Layer, Temperature, Salinity, Sound Velocity 
Implications of the PNG-US Defense Pact for Indonesia's Sovereignty and National Interests Wiyono, Wujud; Supriyanto, Taufiq
Indonesian Journal of Interdisciplinary Research in Science and Technology Vol. 2 No. 5 (2024): May 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/marcopolo.v2i5.9302

Abstract

On May 22, 2023, Papua New Guinea signed a defense pact with the United States. This pact gives US troops access to airfields and ports in Papua New Guinea, which is part of US efforts to reduce China's influence in the Pacific region. The presence of US troops in Papua New Guinea could affect the stability of the surrounding region. Indonesia must ensure that its territory remains safe and is not threatened by foreign military presence in neighboring countries. Good communication is needed between Indonesia, Papua New Guinea and the US to ensure that military actions do not violate Indonesia's territorial sovereignty. The implications for Indonesia's national security must be considered. The presence of US troops near the Indonesian border could affect security dynamics in the region. Indonesia must ensure that foreign military presence does not threaten its national stability and security. Papua New Guinea and Indonesia have important regional ties. Cooperation in the defense sector must strengthen stability and security in the Pacific region. Indonesia needs to ensure that cooperation with Papua New Guinea and the US does not damage bilateral relations with neighboring countries. This research aims to understand how defense cooperation between Papua New Guinea and the United States can influence Indonesia's national interests, as well as to provide policy recommendations related to maintaining Indonesia's sovereignty and national interests in the context of the agreement. The research method used in this research is a qualitative research approach with a case study method.
Mengurai Keterkaitan Sejarah Perang Terhadap Strategi Pertahanan Ekonomi: Pelajaran Masa Lalu untuk Masa Depan Damayanti, Ima; Supriyanto, Taufiq
Civil and Military Cooperation Journal Vol. 1 No. 2 (2024): September
Publisher : PT. Civil Military Center

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Abstract

Tulisan  ini mengulas sejarah terkait bagaimana kondisi perang mempengaruhi strategi pertahanan suatu negara yang terlibat dalam perang. Perang tidak hanya mempengaruhi aspek militer, tetapi juga memiliki dampak yang signifikan terhadap perekonomian nasional dan global, sehingga negara-negara sering kali mengembangkan strategi pertahanan ekonomi menjaga kepentingan ekonomi mereka selama konflik terjadi. Selama perang, negara-negara yang terlibat harus mengeluarkan sejumlah besar uang untuk membeli persenjataan, logistik, dan perawatan medis, yang berdampak pada kebijakan ekonomi nasional mereka. Dalam tulisan ini dibahas bagaimana pengalaman perang-perang di dunia memberikan pelajaran yang sangat penting bagi negara-negara di dunia khususnya Indonesia bagaimana pentingnya dukungan pertahanan ekonomi yang kuat dalam menghadapi potensi terjadinya perang.
Co-Authors Adriyanto, Agus Agustinus Agustinus Apriyanto, I Nengah Putra Budi Purwanto DAMAYANTI, IMA Henry Munandar Manik Irwanto, Bambang Muharrom, Eka Yudha Rahmatullah, Amri Sukoco, Nawanto Budi Triono, Yoyok Widodo S Pranowo Wiyono, Wujud